Machine for the recovery of used foundry sand



A g 1953 J. w. THOMLEY, JR

MACHINE FOR THE RECOVERY OF USED FOUNDRY SAND Filed Aug. 26, 1950 3Sheets-Sheet 1 JOHN WTHOMLEY JR.

INVENTOR.

Aug. 25, 1953 J. w. THOMLEY, JR

MACHINE FOR THE RECOVERY OF USED FOUNDRY SAND 3 Sheets-Sheet 2 FiledAug. 26, 1950 NN n i l. NNN om Q JOHN W THO/"ILEY JR.

INVENTOR.

Aug. 25, 1953 J. w. THOMLEY, JR

MACHINE FOR THE RECOVERY OF USED FOUNDRY SAND 3 Sheets-Sheetv 3 FiledAug. 26 1950 INVENTOR.

hm MW WV mm @n I m \n JOHN 'WTHOMLEY JR.

MFQ Nv wn w mm 9 E i L i km NW latented Aug. 25, 1953 MACHINE FOR THERECOVERY OF USED FOUNDRY SAND John W. Thomley, Jr., Decatur, Ill.

Application August 26, 1950, Serial No. 181,637

3 Claims.

The present invention relates to a machine for mass recovery of sandwhich has been used for foundry moulding purposes, and has moreparticularly to do with a machine of this type adapted for lumpbreaking, disintegrating and aerating such sand.

To facilitate economical and convenient handling and reclaiming of sandbroken from the mould after the casting operation is completed, theinvention contrives to enable the mould flask to be discharged directlyupon a vibratory assembly which breaks apart any adherent lumps of sand,admitting the smaller particles thereof to a suitable conveyor beltarrangement, thus accomplishing an important object.

Another important object is accomplished by provision of a series ofdiffusing discs adapted for the further disintegration and heat-freeingof the sand.

A further object is to provide a machine which is continuously automaticin operation from the loading end to the discharge end thereof andserves to reclaim and prepare used foundry sand for-repeated use.

Other objects and advantages of the present invention will appear fromthe following detailed description which refers to the accompanyingdrawings by like reference numerals for like parts. I

In the drawings:

Figure 1 is an elevational view of the machine as it is normallypositioned for use.

Figure 2 is a top plan view of the machin illustrated in Figure 1.

Figure 3 is a side elevational view showing the opposite side from thatshown in Figure 1.

Figure 4 is a sectional view taken on the line 4-4 of Figure 2, themotor element being shown in elevation.

Figure 5 is a bottom plan view showing the opposite face from thatillustrated in Figure 2, and,

Figure 6 is a view partly in section and partly in elevation takenlaterally of the machine on the line 5-45 of Figure 2.

In general, foundry characteristics with respect to arrangement,operation, and the handling of various necessary machinery, tools andmaterials are well known and obvious to those skilled in the art, andthe following description Referring first to the Figures 1, 2, 4 and 6,

there is illustrated one form of apparatus for practising this inventioncomprising the main body I0, being of general channel formationelongated from an open hopper loading end to a discharge end. Mounted onthe loading end is a loading hopper carrying a vibratory assemblyhereinafter described.

The main body portion In is mounted on a pair of channel members llintegrally engaging the opposite edge portions on the lower face of thebody It and extending 'along substantially the length thereof, theflanged side of the members l-i facing inwardly toward each other. Thechannel members I l are in turn integrally mounted upon a pair ofsimilar although relatively shorter channel members [2 at'the dischargeend of the body It] with their flanged sides facing outwardly away fromeach other. Mounted on the lower face of the channel members 12 and atthe ends toward the loading end of the device is a pair of downwardlyprojecting weblike wheel supports [3 engaging the laterally disposedaxle M on the opposite ends of which are mounted the Wheels [5.

As shown, the device is adapted for use upwardly inclined toward thedischarge end, which, for conciseness, may hereinafter be termed thefrontend, while the loading end may be termed the rear end.

It will be noted that the upper portion of the rear end of the body [0is tapered to a depth of approximately one-half its height as at A andthat the length of said taper comprises the longitudinal dimension ofthe base opening of the hopper l6 while the lateral dimension of saidbase opening is determined by the width of said body l0.

The upwardly flaring walls of the hopper I6 as illustrated, effect therearwardly overhanging arhopper, as a certain amount of the load is heldby the inclined wall [6a of the hopper, thus enabling a substantiallysteady and gradual feeding of sand to the conveyor assembly which willlater be explained. The upper vertical wall portion 16b of the hopperextends along two lateral side edges and one longitudinal side edge ofthe hopper top, enabling the workmen to dump the loaded sand flask intothe hopper from one side of the sand as it is forcibly ejected from themachine by said drum element as above described, although in the Figure2 the hood 55 is shown in fragment only, to facilitate a clearer showingof the drum element, and the hinge 5% is omitted for the same reason.Likewise, the hood 55 is omitted from Figure 5 as well for the samereason.

oppositely disposed side shield portions 51 are mounted on the body itadjacent said drum element to span the gap between the end of the bodyIn and the hood 55.

It is noted that the normal operating position of the machine is asillustrated in the drawings and that it is only necessary to raise therear or loading end thereof to enable it to be conveniently wheeled toany suitable location in the foundry.

Without further description it is believed that this invention isclearly understandable from the foregoing, and although the apparatus issome-- what specifically described and illustrated, it is to beunderstood that other combinations and arrangements of parts may be usedby others in practising the invention without departing from the scopehereof.

Reference should be had to the appended claims to determine the scope ofthe invention.

What is claimed is:

1. In a machine of the type herein described with the loading end anddischarge end, said 9 sand conveying means being under the vibratingmeans, sand diffusing disc means carried by said body over saidconveying means, sand ejecting means mounted adjacent the discharge andof said body, means carried on said body adjacent said sand ejectingmeans to direct the throw of the sand from the said ejecting means,contained automatic electric motivating means carried by the machine foroperating the same, and water spraying means mounted on said body forwetting down the sand as it is carried therethrough in practice.

2. In a machine of the type herein described comprising in combinationan elongated body portion having a loading end and a discharge end,hopper means carried on said loading end,

sand vibrating means mounted in said hopper means, sand conveying beltmeans mounted in said body and connected with the loading and dischargeends thereof, adjustable sand diffusing disc means carried by said bodyand positioned above in proximity with said sand conveying belt means,sand ejecting means mounted adjacent the discharge end of the body,blade members on said sand ejecting means for effecting the throw of thesand, means carried on said body adjacent said sand ejecting means todirect the throw of the sand therefrom, electric motor means carried bythe machine for the operation thereof, water spraying means mounted onsaid body adjacent its loading end for wetting down the sand as it isconveyed through the machine in practise, and wheel members carried bythe machine for enabling its movement to suitable locations for use.

3. In a machine of the type herein described comprising in combinationan elongated body portion having a loading end and a discharge end,hopper means carried on said loading end, sand vibrating means mountedin said hopper means, sand conveying belt means mounted in said. bodybelow said hopper connecting the loading and discharge ends thereof,means for cooling the sand on the discharge means comprising a wettingmeans mounted over the belt conveying means to discharge a coolingmedium on the sand on the conveyin belt and sand diffusing disc meanscarried by the side or the body in contact with the sand moving with theconveyor.

JOHN VJ. TI-IOMLEY, JR.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,718,684 Reed June 18, 1929 1,999,673 Weber Apr. 30, 19352,166,742 Hinkle Feb. 1, 1938 2,168,515 Davies Aug. 3, 1939 2,206,164Davies July 2, 1948 2,267,677 Baxter Dec. 23, 1941 2,273,126 McGillinFeb. 17, 1942 2,488,381 Davies Nov. 15, 1949 FOREIGN PATENTS NumberCountry Date 247,883 Great Britain Feb. 25, 1926 513,516 Germany Nov.28, 1930

